Top Front End Developer Jobs in Bucharest

Build reliable, high-performance frontend features for an AI assistant, including responsive interfaces, application state management, bug fixes, automated testing, debugging, and performance optimization. Collaborate remotely with a global team while maintaining code quality and user satisfaction. The role may also involve desktop applications, cross-platform development, real-time audio and video, and peer-to-peer technologies.

Build and evolve a high-performance, data-driven frontend for a Java enterprise application. Implement secure, scalable UI features using AngularJS and React, ensure cross-browser compatibility, participate in architecture and testing planning, support customers (including travel), join on-call rotation, and collaborate with global teams to drive product adoption.

Design, build and maintain web frontend solutions; partner with stakeholders to translate requirements; manage operations, performance and vendor relationships; provide technical leadership, coaching, and release management; ensure accessibility (WCAG 2 AA), testing, responsive design, and cloud-aligned architecture for SPA applications using Angular and related tooling.

Design, develop, test, and maintain the Inside Business Portal frontend used by corporate clients globally. Implement features using HTML/CSS/JavaScript and modern frameworks, write unit and functional tests, participate in code reviews and SCRUM ceremonies, and work with Azure pipelines for CI/CD to improve security, resilience, and user experience.

As a Senior Frontend Engineer, you will develop Online banking processes with Angular, mentor junior engineers, and ensure scalable solutions.

Build and maintain React-based web UIs, convert Figma designs to code, create reusable components, optimize performance, collaborate with design and backend teams, and lead automated testing with tools like Cypress, Playwright, and Storybook.

Build and modernize Productboard’s frontend platform, migrating its legacy design system to Spark UI. Design AI-ready module boundaries, API contracts, documentation, and agent workflows involving tool use and autonomous execution. Develop high-performance React applications, validate experiments with users, collaborate with product and design teams, own features through production, mentor engineers, and share engineering knowledge across the organization.

Build, test, and optimize responsive web applications using Next.js and React. Collaborate with designers and back-end engineers to implement high-performance, cross-browser UIs, manage state with Redux/Context API, integrate RESTful APIs, and debug front-end issues while following best practices and maintaining clean, scalable code in a remote team.

Build and ship full-stack features for North, develop autonomous agents that access sensitive enterprise data, productionize state-of-the-art models, write minimal, secure low-resource code, and collaborate with researchers to deploy performant RAG/agentic applications while prioritizing security and user experience.

Join the Onboarding & Activation team to build and maintain web onboarding experiences using React, Next.js and TypeScript. Debug issues, write modular UI components, manage state and implement unit/integration tests, collaborate with product and backend engineers, and participate in code reviews to improve engineering quality and reliability.

Build and maintain user-facing features and interfaces for Restream web services. Design and implement UI and business logic, collaborate with product designers and engineers, perform code reviews, improve reliability and scalability, and evaluate emerging technologies.

Design and implement complex customer-facing frontend features using TypeScript and React. Provide technical leadership, mentor junior engineers, drive frontend architecture and best practices, improve performance and accessibility, partner with product/design, integrate with backend APIs, and manage technical debt and scalability.

Lead development and maintenance of front-end libraries, SDKs, and the design system. Provide technical vision, consult and evangelize front-end best practices, collaborate with designers and engineers, drive adoption of the stack, and optimize web application performance and scalability.

Build and architect high-performance, data-rich interfaces using React and TypeScript for observability products. Own frontend architecture, state management, component patterns, visualization, testing, and performance across massive datasets. Collaborate with product, design, and backend teams to deliver user-facing features, leverage AI coding tools, advocate for user experience, and mentor engineers. Experience with observability, OpenTelemetry, cloud-native technologies, and startup environments is advantageous.

Design, develop, and maintain front-end applications with a focus on user experience, integration with APIs, and adherence to best practices, while collaborating within an agile team.

The Senior Frontend Engineer will design and build high-performance applications, mentor junior engineers, and collaborate with teams to enhance the LSEG Workspace platform.

The Software Engineer will design and maintain payment processing systems, mentor other engineers, and ensure security in client transactions within the crypto ecosystem.

Build and improve Restream’s web interfaces and user-facing features for the AI Clips team. Design UI and business logic, collaborate with product designers, participate in code reviews, improve system reliability, and evaluate emerging technologies. The role requires strong JavaScript and TypeScript expertise, advanced React knowledge, CSS preprocessor experience, and familiarity with backend development, cloud infrastructure, containers, and continuous deployment.

Develop and maintain high-performance Angular front-end applications used by bank tellers for cash transactions. Deliver reliable, well-tested code, troubleshoot performance issues, collaborate with cross-functional teams, provide technical consultancy, drive improvements and mentor junior colleagues.

Build and scale customer-facing eCommerce and subscription experiences using React and Next.js. Translate designs into responsive, accessible, high-performance features, integrate APIs and third-party services, optimize Core Web Vitals, write tested code, review pull requests, resolve bugs, and own projects through deployment. Collaborate with product, design, marketing, backend engineering, and operations while contributing to architecture and engineering process improvements.

Lead frontend architecture and technical strategy for scalable CMS and consumer-facing gaming applications. Improve frontend infrastructure, Core Web Vitals, SEO, PageSpeed, code quality, and development workflows. Lead code reviews, integrate APIs and experimentation tools, manage internationalization systems, and communicate technical progress to product and nontechnical stakeholders across globally distributed teams.

Implement pixel‑perfect, responsive, and accessible UIs from Figma; convert designs to semantic HTML5, CSS/SCSS and JavaScript; build reusable UI components and design systems; optimize performance (lazy loading, code splitting, dynamic imports, bundle analysis); apply SSR/SSG/ISR where appropriate; ensure cross‑browser compatibility and WCAG accessibility; integrate with REST APIs; write automated tests and documentation; participate in code reviews and maintain front‑end architecture quality.

Lead the Pro team to design, develop, and deliver frontend systems for Kraken's trading interface, focusing on user experience and mentoring engineers.

As a Frontend Engineer, you will build and enhance frontend solutions for financial configurations, develop internal tools, and create customer-facing interfaces, ensuring high performance and quality in financial applications.

Lead development and maturation of Quantum Design System: build accessible, reusable UI components and design tokens, translate Figma into scalable code, collaborate with designers and UX, document usage, and drive adoption across the organisation.